From 8bfeecbc6ff1c95682b908a7e4beb87dd83fb3b7 Mon Sep 17 00:00:00 2001
From: Akemi <der.richter@gmx.de>
Date: Mon, 5 Mar 2018 02:11:25 +0100
Subject: cocoa-cb: change handling of window aspect ratio changes

i tried being smart and handle aspect ratio differences manually via
atomic drawing and resizing to aspect fitted frames. there were a few
issues with that. like unexpected visibility of certain System GUI
elements on entering fullscreen or visually dropped frames due to the
atomic drawing. now we rely on system mechanics to keep the proper
aspect ratio of our layer, the recommended way. as a side effect it also
fixes a segfault.

Fixes #5581
---
 video/out/cocoa-cb/video_layer.swift | 23 ++++++++---------------
 1 file changed, 8 insertions(+), 15 deletions(-)

(limited to 'video/out/cocoa-cb/video_layer.swift')

diff --git a/video/out/cocoa-cb/video_layer.swift b/video/out/cocoa-cb/video_layer.swift
index c5604b88f7..8cdb692ae5 100644
--- a/video/out/cocoa-cb/video_layer.swift
+++ b/video/out/cocoa-cb/video_layer.swift
@@ -30,11 +30,10 @@ class VideoLayer: CAOpenGLLayer {
     var hasVideo: Bool = false
     var neededFlips: Int = 0
     var cglContext: CGLContextObj? = nil
+    var surfaceSize: NSSize?
 
     enum Draw: Int { case normal = 1, atomic, atomicEnd }
     var draw: Draw = .normal
-    let drawLock = NSLock()
-    var surfaceSize: NSSize?
 
     var canDrawOffScreen: Bool = false
     var lastThread: Thread? = nil
@@ -49,10 +48,7 @@ class VideoLayer: CAOpenGLLayer {
 
     var inLiveResize: Bool = false {
         didSet {
-            if inLiveResize == false {
-                isAsynchronous = false
-                neededFlips += 1
-            } else {
+            if inLiveResize {
                 isAsynchronous = true
             }
         }
@@ -86,6 +82,9 @@ class VideoLayer: CAOpenGLLayer {
                           pixelFormat pf: CGLPixelFormatObj,
                           forLayerTime t: CFTimeInterval,
                           displayTime ts: UnsafePointer<CVTimeStamp>?) -> Bool {
+        if inLiveResize == false {
+            isAsynchronous = false
+        }
         return mpv != nil && cocoaCB.backendState == .init
     }
 
@@ -100,13 +99,7 @@ class VideoLayer: CAOpenGLLayer {
     }
 
     func draw(_ ctx: CGLContextObj) {
-        drawLock.lock()
-        updateSurfaceSize()
-
-        let aspectRatioDiff = fabs( (surfaceSize!.width/surfaceSize!.height) -
-                                    (bounds.size.width/bounds.size.height) )
-
-        if aspectRatioDiff <= 0.005 && draw.rawValue >= Draw.atomic.rawValue {
+        if draw.rawValue >= Draw.atomic.rawValue {
              if draw == .atomic {
                 draw = .atomicEnd
              } else {
@@ -114,9 +107,9 @@ class VideoLayer: CAOpenGLLayer {
              }
         }
 
+        updateSurfaceSize()
         mpv.drawRender(surfaceSize!)
         CGLFlushDrawable(ctx)
-        drawLock.unlock()
 
         if needsICCUpdate {
             needsICCUpdate = false
@@ -148,7 +141,7 @@ class VideoLayer: CAOpenGLLayer {
             NSEnableScreenUpdates()
             draw = .normal
         }
-     }
+    }
 
     override func copyCGLPixelFormat(forDisplayMask mask: UInt32) -> CGLPixelFormatObj {
         let glVersions: [CGLOpenGLProfile] = [
-- 
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